this is how i’ve understood it to work, yeah. the “feeling” of the ir is much different than the xr (for me, that is). i’ve tried comparing the teva generics of

this is how i’ve understood it to work, yeah. the “feeling” of the ir is much different than the xr (for me, that is). i’ve tried comparing the teva generics of each formulation, and the xr just didn’t last as long as two perfectly-spaced ir doses — about five hours for one xr dose, eight hours for two equivalent ir doses. i have a feeling that it’s a combination of manufacturing (as you mentioned) and body chemistry to a lesser extent. vvyanse seemed to work the best, but the 70mg capsules felt slightly too weak, and a month’s prescription for them is literally 9x the cost of the adderall.